We are currently experimenting with these in several towns around the UK.
From Defra - "Anaerobic digestion breaks down organic matter to produce biogas which can be used as a renewable energy source for heat and power, and as a transport fuel. It produces a nutrient-rich digestate which can be used as fertiliser, and importantly it keeps organic waste out of landfill, which cuts greenhouse gas emissions. "
THis is working so well at the moment.. household food waste is collected by special carts which takeit to the plant where the process takes place. The pilot scheme is producing enough power to run 300 homes. If this continues with no major problems it is intended to build these plants all over the country. Do you think it could catch on in your neighbourhood?